as the fbi refines its search there are new questions as to what egyptian security forces were doing while the attack on the egyptian embassy was in motion and what the libyans were doing wet attack there was taking place. libyan officials say u.s. ambassador christopher stevens and sean smith were killed in the first attack in benghazi. a navy seal was killed and 30 other people were wounded. >> reporter: within the last hour hour the state department confirming the investigation is being led with by libyan authorities. the state department remains cautious wit comes to assigning blame. >> as we said yesterday when we were on background, we are very cautious withdrawing any conclusions with regard to who the perpetrators were, what their motivations were, whether it was premeditated. whether they had extern contacts, whether there was any link until we have a chance to investigate. report report attacks benghazi are described by the head of the house intelligence committee as a premeditated attack. ansar al-sharia wants to restrict adherence to sharia in that country. >> it fits the